No size tag but fits like a XS/S This go-anywhere midi dress is as comfortable as it is classic. full-on® luon A tight-knit version of our Luon® fabric, sweat-wicking Full-On® Luon is four-way stretch with a cottony-soft feel incredible support and coverage sweat-wicking four-way stretch cottony-soft handfeel naturally breathable features Designed for: On the Move Lycra®: Added Lycra® fibre for stretch and shape retention Light support: Intended to provide light support for an A/B cup